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Email

[email protected]

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Summary

Software engineer building production systems in payments, e-commerce, and insurance since 2009. Founding engineer of a simple-payment business at Interpark. At Samsung Fire & Marine Insurance, built the company's first AWS customer service, an enterprise LLM Text-to-SQL service for 5,000+ employees, and secure SSO under financial-sector regulations. Leading the data warehouse group since 2025.

Work Experience

Jan 2022 - Present

Software Engineer @ Samsung Fire & Marine Insurance - Seoul, South Korea

Build and run digital products and data platforms for Korea's leading non-life insurer.

• Lead the data warehouse group (since Jun 2025); brought an outsourced operation in-house
• Lead an AI-powered sales analytics platform: an LLM Text-to-SQL service for 5,000+ employees; patent pending
• Designed and built OmoOmo, the company's first AWS customer service (metaverse); #1 on the Korean App Store
• Designed and developed cloud services for Chac, the Samsung Fire Direct digital platform
• Established the cloud platform and developer work environment
• Built and run open-source SSO (Keycloak) on AWS ECS with AD integration, limiting SaaS access to the corporate network

Apr 2019 - Dec 2021

DevOps Engineer @ GS SHOP - Seoul, South Korea

Built and ran the integration, monitoring, and identity systems behind GS SHOP's TV home shopping and online shopping services (Java, Python, Linux).

• Designed, developed, and maintained partner interface/gateway applications (logistics, card, credit scoring)
• Built a log and metric analytics platform with ELK, Grafana, and Prometheus
• Proposed and built an Interactive Alert Service that automatically calls on-call staff during incidents; applied Prophet to forecast time-series data and detect anomalies
• Customized Jira Software and integrated it with internal services
• Migrated a commercial SSO to open-source Keycloak and built OIDC/SAML integrations, including Microsoft 365
• Ran DevOps for the open-source Broadleaf Commerce platform; built Microsoft Teams apps and bots

Aug 2011 - Mar 2019

Fintech DevOps Engineer @ Interpark Corporation - Seoul, South Korea

Built and ran the online payment service for Interpark Group, covering shopping, books, tickets, flights, and hotels (Java, Spring, Linux, Oracle, Python).

• One of three founding engineers of a new simple-payment business; designed and built it from day one, including redundancy and DR; spun off as Yelopay, later KONEX-listed
• Designed, developed, and operated payment systems (card, bank transfer, pay-later, loyalty points)
• Designed a web payment API and modules, replacing bank-style fixed-length merchant integration
• Built firm banking, CMS, and real-time transfer gateways to KFTC and KSNET

Aug 2007 - Aug 2011

Earlier Experience

Backend developer for card fraud detection at Creditline · Overseas technical sales at KEBTechnology · Data center coordinator in Seattle

Education

Aug 2003 - May 2007

Aug 2000 - May 2003

B.A. in Business Administration, Major in Management Information Systems @ Washington State University, Pullman, WA, US

B.S. program in Computer Science @ Saint Martin's University, Lacey, WA, US; transferred to WSU

Patent

2025

Patent pending: Method and device for processing natural language for insurance query

Forecasting based on time-series data

Utilize Jira Software

Single Sign-On with Keycloak

Microsoft M365 Integration with Keycloak